Users could log into their Gmail accounts and access their email, saved bookmarks, and web history.

Google Sidewiki was launched on September 23, 2009, allowing users to make comments, which were visible to the public, on any web page.

Google said that the feature "adds useful links" and "none of the companies which received AutoLinks had paid for the service."

[citation needed] Google Watch has raised concerns about Google Toolbar's possible threats to privacy, such as tracking of browsing patterns, automatic installation of updates without the user's knowledge, and a privacy policy that can be revised without notice.

[11] It does track "anonymous" statistics, which can reveal a lot of information when correlated with other data, although similar criticisms could be made of Google's online search engine.

Functionally, it downloaded a small packet of work, performed calculations on it, and uploaded it back to Stanford University.